If so (in re: Captain Hook) then they should not have had him supposedly singing and dancing. I give him credit for the attempts, but ......
Heck, John Travolta probably could have done well in that part.
When I read interviews with various performers, they noted that during rehearsals, Walken never did the same thing twice. You had to be on your toes, as he stood in different places, looked at a different person than he was supposed to, that you never knew what he was going to do.....or even say.